As I understand there are 2 relays on the firewall...one for the fuel pump and one for the cooling fan. Which one is which? The fan doesn't come on unless the A/C is on and so I'm replacing the relay to try and fix the problem.
Thanks,
Geoff
-the car is a '92 Camaro RS w/ the V8

 

I'd say its a problem with the temp switch on the passenger side head before I would mess with the relay. You say the fan is coming on with the A/C, so the relay is sending the power. The stock fan switch is set for something like 230º, way too high.

 

Simple enough. Disconnect the wire and ground it. If the fan does not come on, next thing to check is the relay.

 

my firebird had a similar problem..but the relay switch completely died..then the fan motor went all at once causing a small elecrical fire burnt all my wires up lol